Back to EveryPatent.com
United States Patent | 5,304,985 |
Cosser | April 19, 1994 |
A water level sensing probe which comprises a central electrode encircled by a tubular ceramic insulator which is held between an integral laterally projecting portion of the electrode, which forms a conductive tip, and a tubular metal mounting body which surrounds and is displaced from the electrode that passes through it. The ceramic insulator is taper locked within the conductive tip at one end and within the tubular metal mounting body at the other end.
Inventors: | Cosser; Harry F. (16 Tavistock Road, Fleet, Hampshire, GB) |
Appl. No.: | 869504 |
Filed: | April 16, 1992 |
Apr 17, 1991[GB] | 9108148 |
Current U.S. Class: | 340/620; 73/304R; 174/151; 340/618 |
Intern'l Class: | G08B 021/00 |
Field of Search: | 340/618,620,603 174/11 R,18,151 73/304 R,290 R 137/551,558 200/61.04,61.05 |
1911756 | May., 1933 | Gunderson | 340/620. |
3158682 | Nov., 1964 | Goellner | 174/151. |
Foreign Patent Documents | |||
734473 | May., 1980 | SU. | |
830062 | May., 1981 | SU. |